Talon Peregrine vs. Peregrine X?

Can someone help me determine the difference between Talon Peregrine and Peregrine X models? The BlueBook values are vastly different ($1600 vs $5400), and I want to make sure the models I'm buying are Peregrine X models. They are silver in color and have big curved stands, and look like the ones in this link, so I believe they are Peregrine X versions. The owner claims they were $13k when new.
http://www.stereotimes.com/speak030803.shtml

Also, could someone tell me how much these would be worth nowadays? The last Peregrine X sale was in 2003 for $5400.

Thanks,
Chris